Fan pulley



Oct. 28 1924. 1,513,601

v E. K. KING FAN PULLEY Filed March 22. 1924 Patented Got. 28, 1924.

UNETED STATES isiatei rarnnrorricn EDWARD K. KING, OF WINNER, SOUTH DAKOTA, ASSIGNO-R or ONE-HALE TO WILLIAM KING, OF HAMILL, soUTHnAKorA.

FAN PULLEY.

Application filed March 22, 1924. Serial No. 701,142.

To aZZ whom it may concern.

Be it known that I, EDWARD K. KING a citizen of the United States, residing at Vinner, in thecounty of Tripp and State of South Dakota, have invented certain new and useful Improvements in Fan Pulleys, of which the following is a specification,

reference being had to the accompanying drawings.

This invention relates to certain improvements in fan pulleys and has relation more particularly to a device of this general char acter adapted to be engaged with the driving shaft of an internal combustion engine and it is an object of the invention to provide a device of this general character hav-' ing associated therewith novel and improved means to hold the working parts of the engine in a forward position in order to secure the best effects from the generator or magneto. I, I

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved fan pulley whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth. I v

The novel features of my invention will hereinafter be definitely claimed.

In order that my invention may be the better understood, I will now proceed to'describe thesame with reference to the ac companying drawings, wherein Figure 1 is a. viewpartly in section an partly in elevation illustrating a fan pulley constructed in accordance with an embodiment of my invention;

Figure 2 is a sectional view with parts in elevation taken through the outer end portion of the pulley as disclosed in Figure 1;

Figure 3 is a sectional view taken through the inner portion of the pulley as illustrated in Figure 1, with certain of the parts in elevation;

Figure 4 is a view in outer face elevation of the washer as herein employed;

Figure 5 is a view in outer face elevation of a washer constructed in accordance with a further embodiment of myinvention;

Figure 6 is a sectional view taken substantially on the line 6-6 of Figure 5.

As disclosed in the accompanying drawings, C denotes the forward end portion of a crank shaft of an internal combustion engine rotatably supported by the bearing 1 as is well-known. The outer or extended extremity of the shaft C is provided there.- through with a radially disposed opening 2 for a purpose to be hereinafter more particularly referred to.

F denotes a fan belt pulley comprising a hub 3 and a rim lconcentric to said hub and spaced a desired distance therefrom. The hub 3 and the rim 4 as herein-disclosed are co-extensive in length one with respect to the other and are connected intermediate their ends with the web 5 integral therewith.

The hub 3 inwardly of the web 5 is provided with the diametrically opposed openings 6 which are adaptedto befbrought into register with the opening 2 in the shaft C so that the connecting or coupling pin 7 may be inserted through said registering openings to lock the pulley F to the shaft for rotation therewith. The pin 7 is of a length i adapted to permit a suitable/ implement to:

be ipserted therethrough to drive out the Surrounding the inner portion of the hub 3 is an expansible coil spring 9 which bears against the web-5 and also against a washer 10 snugly fitting on the shaft C and main tained by the spring 9 in direct contact with the adjacent face of the bearing 1. The spring 9 constantly urges the pulley F and the shaft outwardly to maintain the working parts of the internal combustion engine in a forward position and particularly to maintain the generator or magneto in its most effective position. i

The central opening 11 of the washer 10 is defined by an outstandingv beveled flange 12 with which the adjacent end convolution 9 of the spring 9 snugly engages so that the washer 10 will be caused to rotate or revolve with the spring 9 and more articularly the shaft C and the pulley' F. n the embodiment of the invention as illustrated in Figures and 6, the flange 12 is interrupted.

The central opening 11 of the washer is also defined by the rearwardly directed flange 1a which has direct contact with the adjacent face of the bearing 1. This flange provides for minimum frictional contact between the washer 10 and the bearing 1 whereby said washer 10 may be effectively lubricated by the oil supplied to the crank shaft to facilitate the desired rotation-of the washer 10.

The forward portion of the hub 3 is also provided with diametrically opposed openings 15 through which is adapted to be inserted a cross pin 16. The rim 4 is provided with openings 17 in radial alignment with the openings 15, one of said openings 17 being of a size to readily permit the pin 16 to pass therethrough while the second opening 17 is of a reduced diameter but of a size to readily permit a suitable implement to be engaged with the pin 16 when it is desired to force the same. out of working position. After the pin 16 has been applied in operative position it is held against outward movement through the larger opening 17 by the cotter pin 18 or the like disposed through the adjacent extremity of the pin. The pin 16 when applied is adapted to be engaged by the crank ratchet 19.

The ends of the rim 1 are defined by the outstanding flanges 20 which are employed to assure the maintenance of the belt in proper engagement with the pulley F.

My improved pulley and its associated parts can be readily installed without the assistance of a skilled mechanic. To install it is only necessary to remove the old fan or pulley wheel from the crank shaft, place the washer 10 on the shaft with the spring 9, start the pin 7 through a hole 6 in the hub 3 and then slip the pulley on the shaft, compressing the spring 9 until the holes 6 in the hub 3 are brought into register with the opening 2 in the crank shaft whereupon the pin 7 is driven through such registering openings until the spring 9 expands and slips over the pm 7. The spring 9 serves to hold the pin 7 in applied or working posi- K tion.

From the foregoing description it is thought to be obvious that a fan pulley constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

1 claim In combination with the drive shaft of a motor, a pulley comprising a hub, a rim surrounding the hub and spaced therefrom, said hub and rim being substantially co-ex tensive in length one with respect to the other, a web connecting the hub and rim substantially midway the ends thereof, one end portion of the hub being provided in its wall with diametrically opposed openings, the shaft being provided with an opening with which the openings in the hub are adapted to register, the rim being provided with an opening in radial alignment with the openings in. the hub, a pin adapted to be inserted through the registering openings of the hub and shaft, said pin being also insortable through the opening in the rim, a cross pin insertable through the opposite end portion of the hub and confined within the rim when in applied position, a washer surrounding the'shaft immediately adjacent to the bearing, and a coil spring surrounding the shaft and interposed between and bearing against the Washer and the web.

In testimony whereof I hereunto affix my signature.

EDWARD K. KING. 

